STAG1

STAG1
Identifiers
Aliases	STAG1, SA1, SCC3A, stromal antigen 1, MRD47
External IDs	OMIM: 604358 MGI: 1098658 HomoloGene: 21191 GeneCards: STAG1
Gene location (Human)
Chr.	Chromosome 3 (human)
End	136,752,403 bp
Gene location (Mouse)
Chr.	Chromosome 9 (mouse)
End	100,841,428 bp
RNA expression pattern
	Top expressed in
	Achilles tendon; ; kidney; ; stomach; ; sural nerve; ; lung; ; heart; ; biceps brachii; ; colon; ; parotid gland;
	More reference expression data
	; ;
	More reference expression data
Gene ontology
Molecular function	GO:0001077, GO:0001212, GO:0001213, GO:0001211, GO:0001205 DNA-binding transcription activator activity, RNA polymerase II-specific; chromatin binding; GO:0001948 protein binding;
Cellular component	chromosome; cytosol; chromatin; chromosome, centromeric region; nucleus; nucleoplasm; nuclear body; cohesin complex; nuclear matrix; mitotic spindle pole;
Biological process	chromosome segregation; cell division; cell cycle; transcription by RNA polymerase II; positive regulation of transcription by RNA polymerase II; regulation of mitotic spindle assembly; sister chromatid cohesion;
	Sources:Amigo / QuickGO
Orthologs
	10274
	20842
	ENSG00000118007
	ENSMUSG00000037286
	Q8WVM7
	Q9D3E6
	NM_005862
	NM_009282; NM_001357264; NM_001357265
	NP_005853
	NP_033308; NP_001344193; NP_001344194
	Wikidata
View/Edit Human	View/Edit Mouse

Structure of SA2 (blue) and RAD21 (green) (PDB 4PK7)

Cohesin subunit SA-1 (SA1) is a protein that in humans is encoded by the STAG1 gene.^[5]^[6] SA1 is a subunit of the Cohesin complex which mediates sister chromatid cohesion, homologous recombination and DNA looping. In somatic cells cohesin is formed of SMC3, SMC1, RAD21 and either SA1 or SA2 whereas in meiosis, cohesin is formed of SMC3, SMC1B, REC8 and SA3.

Structure and Interactions[]

SA1 is one of three human homologues of the yeast protein Scc3 which is a core subunit of the cohesin complex (the three human paralogues are SA1, SA2 and SA3). SA1 and SA2 are expressed in somatic cells whereas SA3 is the main SA paralogue in meiotic cells. SA1 stably binds to cohesin via the RAD21 subunit and functions as a platform for other regulatory subunits. SA1 has roles in regulating both cohesin loading and release. ^[6]

References[]

^ ^a ^b ^c GRCh38: Ensembl release 89: ENSG00000118007 - Ensembl, May 2017
^ ^a ^b ^c GRCm38: Ensembl release 89: ENSMUSG00000037286 - Ensembl, May 2017
^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ Carramolino L, Lee BC, Zaballos A, Peled A, Barthelemy I, Shav-Tal Y, Prieto I, Carmi P, Gothelf Y, González de Buitrago G, Aracil M, Márquez G, Barbero JL, Zipori D (August 1997). "SA-1, a nuclear protein encoded by one member of a novel gene family: molecular cloning and detection in hemopoietic organs". Gene. 195 (2): 151–9. doi:10.1016/S0378-1119(97)00121-2. PMID 9305759.
^ ^a ^b "Entrez Gene: STAG1 stromal antigen 1".

External links[]

STAG1 human gene location in the UCSC Genome Browser.
STAG1 human gene details in the UCSC Genome Browser.

This article on a gene on human chromosome 3 is a stub. You can help Wikipedia by .

[refGRCh38Ensembl-1] GRCh38: Ensembl release 89: ENSG00000118007 - Ensembl, May 2017

[refGRCm38Ensembl-2] GRCm38: Ensembl release 89: ENSMUSG00000037286 - Ensembl, May 2017

[3] "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[4] "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[pmid9305759-5] Carramolino L, Lee BC, Zaballos A, Peled A, Barthelemy I, Shav-Tal Y, Prieto I, Carmi P, Gothelf Y, González de Buitrago G, Aracil M, Márquez G, Barbero JL, Zipori D (August 1997). "SA-1, a nuclear protein encoded by one member of a novel gene family: molecular cloning and detection in hemopoietic organs". Gene. 195 (2): 151–9. doi:10.1016/S0378-1119(97)00121-2. PMID 9305759.

[entrez-6] "Entrez Gene: STAG1 stromal antigen 1".

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